Send a markdown message to DingTalk group
AI agents use dingtalk_send_markdown to create or update resources in Claude Code DingTalk MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Claude Code DingTalk MCP Server environment.
This tool creates new data (markdown-formatted messages) in a DingTalk group, making it a Write-category action. It is reversible (messages can be deleted). Severity is medium because misuse could flood groups with spam or send unintended notifications to teams, but lacks the destructive, financial, or code-execution risks that would elevate severity higher.
From the tool's definition Tool is named 'dingtalk_send_markdown' with description 'Send a markdown message to DingTalk group'. The verb 'send' combined with 'message' indicates data creation/transmission to an external service (DingTalk).
Documented attack patterns abuse exactly the kind of access dingtalk_send_markdown gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Claude Code DingTalk MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for dingtalk_send_markdown:
{
"version": "1",
"default": "deny",
"tools": {
"dingtalk_send_markdown": {
"limits": [
{
"counter": "dingtalk_send_markdown_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}dingtalk_send_markdown stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Send a markdown message to DingTalk group. It is categorised as a Write tool in the Claude Code DingTalk MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Claude Code DingTalk MCP Server MCP server in PolicyLayer and add a rule for dingtalk_send_markdown: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Claude Code DingTalk MCP Server. Nothing to install.
dingtalk_send_markdown is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the dingtalk_send_markdown rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for dingtalk_send_markdown. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
dingtalk_send_markdown is provided by the Claude Code DingTalk MCP Server MCP server (sfyyy/claude-code-dingtalk-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Claude Code DingTalk MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
5 Claude Code DingTalk MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.